Remember fullscreen state of secondary window in MEOW mode

rtgui/editwindow.h

@@ -53,6 +53,7 @@ public:
     //bool on_window_state_event(GdkEventWindowState* event);
     void on_mainNB_switch_page(Gtk::Widget* page, guint page_num);
     void set_title_decorated(Glib::ustring fname);
+    void setFullScreen (bool fullScreen) { isFullscreen = fullScreen; }
 
     void on_realize ();
 };